2 * H.264 encoding using the x264 library
3 * Copyright (C) 2005 Mans Rullgard <mans@mansr.com>
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #include "libavutil/internal.h"
23 #include "libavutil/opt.h"
24 #include "libavutil/mem.h"
25 #include "libavutil/pixdesc.h"
26 #include "libavutil/stereo3d.h"
31 #define X264_API_IMPORTS 1
41 typedef struct X264Context {
85 static void X264_log(void *p, int level, const char *fmt, va_list args)
87 static const int level_map[] = {
88 [X264_LOG_ERROR] = AV_LOG_ERROR,
89 [X264_LOG_WARNING] = AV_LOG_WARNING,
90 [X264_LOG_INFO] = AV_LOG_INFO,
91 [X264_LOG_DEBUG] = AV_LOG_DEBUG
94 if (level < 0 || level > X264_LOG_DEBUG)
97 av_vlog(p, level_map[level], fmt, args);
101 static int encode_nals(AVCodecContext *ctx, AVPacket *pkt,
102 x264_nal_t *nals, int nnal)
104 X264Context *x4 = ctx->priv_data;
106 int i, size = x4->sei_size, ret;
111 for (i = 0; i < nnal; i++)
112 size += nals[i].i_payload;
114 if ((ret = ff_alloc_packet2(ctx, pkt, size)) < 0)
119 /* Write the SEI as part of the first frame. */
120 if (x4->sei_size > 0 && nnal > 0) {
121 if (x4->sei_size > size) {
122 av_log(ctx, AV_LOG_ERROR, "Error: nal buffer is too small\n");
125 memcpy(p, x4->sei, x4->sei_size);
131 for (i = 0; i < nnal; i++){
132 memcpy(p, nals[i].p_payload, nals[i].i_payload);
133 p += nals[i].i_payload;
139 static int avfmt2_num_planes(int avfmt)
142 case AV_PIX_FMT_YUV420P:
143 case AV_PIX_FMT_YUVJ420P:
144 case AV_PIX_FMT_YUV420P9:
145 case AV_PIX_FMT_YUV420P10:
146 case AV_PIX_FMT_YUV444P:
149 case AV_PIX_FMT_BGR24:
150 case AV_PIX_FMT_RGB24:
158 static int X264_frame(AVCodecContext *ctx, AVPacket *pkt, const AVFrame *frame,
161 X264Context *x4 = ctx->priv_data;
164 x264_picture_t pic_out = {0};
165 AVFrameSideData *side_data;
167 x264_picture_init( &x4->pic );
168 x4->pic.img.i_csp = x4->params.i_csp;
169 if (x264_bit_depth > 8)
170 x4->pic.img.i_csp |= X264_CSP_HIGH_DEPTH;
171 x4->pic.img.i_plane = avfmt2_num_planes(ctx->pix_fmt);
174 for (i = 0; i < x4->pic.img.i_plane; i++) {
175 x4->pic.img.plane[i] = frame->data[i];
176 x4->pic.img.i_stride[i] = frame->linesize[i];
179 x4->pic.i_pts = frame->pts;
181 frame->pict_type == AV_PICTURE_TYPE_I ? X264_TYPE_KEYFRAME :
182 frame->pict_type == AV_PICTURE_TYPE_P ? X264_TYPE_P :
183 frame->pict_type == AV_PICTURE_TYPE_B ? X264_TYPE_B :
185 if (x4->params.b_interlaced && x4->params.b_tff != frame->top_field_first) {
186 x4->params.b_tff = frame->top_field_first;
187 x264_encoder_reconfig(x4->enc, &x4->params);
189 if (x4->params.vui.i_sar_height != ctx->sample_aspect_ratio.den ||
190 x4->params.vui.i_sar_width != ctx->sample_aspect_ratio.num) {
191 x4->params.vui.i_sar_height = ctx->sample_aspect_ratio.den;
192 x4->params.vui.i_sar_width = ctx->sample_aspect_ratio.num;
193 x264_encoder_reconfig(x4->enc, &x4->params);
196 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_STEREO3D);
198 AVStereo3D *stereo = (AVStereo3D *)side_data->data;
201 switch (stereo->type) {
202 case AV_STEREO3D_CHECKERBOARD:
205 case AV_STEREO3D_LINES:
208 case AV_STEREO3D_COLUMNS:
211 case AV_STEREO3D_SIDEBYSIDE:
214 case AV_STEREO3D_TOPBOTTOM:
217 case AV_STEREO3D_FRAMESEQUENCE:
225 if (fpa_type != x4->params.i_frame_packing) {
226 x4->params.i_frame_packing = fpa_type;
227 x264_encoder_reconfig(x4->enc, &x4->params);
232 if (x264_encoder_encode(x4->enc, &nal, &nnal, frame? &x4->pic: NULL, &pic_out) < 0)
235 ret = encode_nals(ctx, pkt, nal, nnal);
238 } while (!ret && !frame && x264_encoder_delayed_frames(x4->enc));
240 pkt->pts = pic_out.i_pts;
241 pkt->dts = pic_out.i_dts;
243 switch (pic_out.i_type) {
246 ctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
249 ctx->coded_frame->pict_type = AV_PICTURE_TYPE_P;
253 ctx->coded_frame->pict_type = AV_PICTURE_TYPE_B;
257 pkt->flags |= AV_PKT_FLAG_KEY*pic_out.b_keyframe;
259 ctx->coded_frame->quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;
265 static av_cold int X264_close(AVCodecContext *avctx)
267 X264Context *x4 = avctx->priv_data;
269 av_freep(&avctx->extradata);
273 x264_encoder_close(x4->enc);
275 av_frame_free(&avctx->coded_frame);
280 #define OPT_STR(opt, param) \
283 if (param!=NULL && (ret = x264_param_parse(&x4->params, opt, param)) < 0) { \
284 if(ret == X264_PARAM_BAD_NAME) \
285 av_log(avctx, AV_LOG_ERROR, \
286 "bad option '%s': '%s'\n", opt, param); \
288 av_log(avctx, AV_LOG_ERROR, \
289 "bad value for '%s': '%s'\n", opt, param); \
294 static int convert_pix_fmt(enum AVPixelFormat pix_fmt)
297 case AV_PIX_FMT_YUV420P:
298 case AV_PIX_FMT_YUVJ420P:
299 case AV_PIX_FMT_YUV420P9:
300 case AV_PIX_FMT_YUV420P10: return X264_CSP_I420;
301 case AV_PIX_FMT_YUV422P:
302 case AV_PIX_FMT_YUVJ422P:
303 case AV_PIX_FMT_YUV422P10: return X264_CSP_I422;
304 case AV_PIX_FMT_YUV444P:
305 case AV_PIX_FMT_YUVJ444P:
306 case AV_PIX_FMT_YUV444P9:
307 case AV_PIX_FMT_YUV444P10: return X264_CSP_I444;
309 case AV_PIX_FMT_BGR24:
312 case AV_PIX_FMT_RGB24:
315 case AV_PIX_FMT_NV12: return X264_CSP_NV12;
316 case AV_PIX_FMT_NV16:
317 case AV_PIX_FMT_NV20: return X264_CSP_NV16;
322 #define PARSE_X264_OPT(name, var)\
323 if (x4->var && x264_param_parse(&x4->params, name, x4->var) < 0) {\
324 av_log(avctx, AV_LOG_ERROR, "Error parsing option '%s' with value '%s'.\n", name, x4->var);\
325 return AVERROR(EINVAL);\
328 static av_cold int X264_init(AVCodecContext *avctx)
330 X264Context *x4 = avctx->priv_data;
333 x264_param_default(&x4->params);
335 x4->params.b_deblocking_filter = avctx->flags & CODEC_FLAG_LOOP_FILTER;
337 x4->params.rc.f_pb_factor = avctx->b_quant_factor;
338 x4->params.analyse.i_chroma_qp_offset = avctx->chromaoffset;
339 if (x4->preset || x4->tune)
340 if (x264_param_default_preset(&x4->params, x4->preset, x4->tune) < 0) {
342 av_log(avctx, AV_LOG_ERROR, "Error setting preset/tune %s/%s.\n", x4->preset, x4->tune);
343 av_log(avctx, AV_LOG_INFO, "Possible presets:");
344 for (i = 0; x264_preset_names[i]; i++)
345 av_log(avctx, AV_LOG_INFO, " %s", x264_preset_names[i]);
346 av_log(avctx, AV_LOG_INFO, "\n");
347 av_log(avctx, AV_LOG_INFO, "Possible tunes:");
348 for (i = 0; x264_tune_names[i]; i++)
349 av_log(avctx, AV_LOG_INFO, " %s", x264_tune_names[i]);
350 av_log(avctx, AV_LOG_INFO, "\n");
351 return AVERROR(EINVAL);
354 if (avctx->level > 0)
355 x4->params.i_level_idc = avctx->level;
357 x4->params.pf_log = X264_log;
358 x4->params.p_log_private = avctx;
359 x4->params.i_log_level = X264_LOG_DEBUG;
360 x4->params.i_csp = convert_pix_fmt(avctx->pix_fmt);
362 OPT_STR("weightp", x4->wpredp);
364 if (avctx->bit_rate) {
365 x4->params.rc.i_bitrate = avctx->bit_rate / 1000;
366 x4->params.rc.i_rc_method = X264_RC_ABR;
368 x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000;
369 x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000;
370 x4->params.rc.b_stat_write = avctx->flags & CODEC_FLAG_PASS1;
371 if (avctx->flags & CODEC_FLAG_PASS2) {
372 x4->params.rc.b_stat_read = 1;
375 x4->params.rc.i_rc_method = X264_RC_CRF;
376 x4->params.rc.f_rf_constant = x4->crf;
377 } else if (x4->cqp >= 0) {
378 x4->params.rc.i_rc_method = X264_RC_CQP;
379 x4->params.rc.i_qp_constant = x4->cqp;
382 if (x4->crf_max >= 0)
383 x4->params.rc.f_rf_constant_max = x4->crf_max;
386 if (avctx->rc_buffer_size && avctx->rc_initial_buffer_occupancy > 0 &&
387 (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) {
388 x4->params.rc.f_vbv_buffer_init =
389 (float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size;
392 OPT_STR("level", x4->level);
395 const char *p= x4->x264opts;
397 char param[256]={0}, val[256]={0};
398 if(sscanf(p, "%255[^:=]=%255[^:]", param, val) == 1){
407 if (avctx->i_quant_factor > 0)
408 x4->params.rc.f_ip_factor = 1 / fabs(avctx->i_quant_factor);
410 if (avctx->me_method == ME_EPZS)
411 x4->params.analyse.i_me_method = X264_ME_DIA;
412 else if (avctx->me_method == ME_HEX)
413 x4->params.analyse.i_me_method = X264_ME_HEX;
414 else if (avctx->me_method == ME_UMH)
415 x4->params.analyse.i_me_method = X264_ME_UMH;
416 else if (avctx->me_method == ME_FULL)
417 x4->params.analyse.i_me_method = X264_ME_ESA;
418 else if (avctx->me_method == ME_TESA)
419 x4->params.analyse.i_me_method = X264_ME_TESA;
421 if (avctx->gop_size >= 0)
422 x4->params.i_keyint_max = avctx->gop_size;
423 if (avctx->max_b_frames >= 0)
424 x4->params.i_bframe = avctx->max_b_frames;
425 if (avctx->scenechange_threshold >= 0)
426 x4->params.i_scenecut_threshold = avctx->scenechange_threshold;
427 if (avctx->qmin >= 0)
428 x4->params.rc.i_qp_min = avctx->qmin;
429 if (avctx->qmax >= 0)
430 x4->params.rc.i_qp_max = avctx->qmax;
431 if (avctx->max_qdiff >= 0)
432 x4->params.rc.i_qp_step = avctx->max_qdiff;
433 if (avctx->qblur >= 0)
434 x4->params.rc.f_qblur = avctx->qblur; /* temporally blur quants */
435 if (avctx->qcompress >= 0)
436 x4->params.rc.f_qcompress = avctx->qcompress; /* 0.0 => cbr, 1.0 => constant qp */
437 if (avctx->refs >= 0)
438 x4->params.i_frame_reference = avctx->refs;
439 if (avctx->trellis >= 0)
440 x4->params.analyse.i_trellis = avctx->trellis;
441 if (avctx->me_range >= 0)
442 x4->params.analyse.i_me_range = avctx->me_range;
443 if (avctx->noise_reduction >= 0)
444 x4->params.analyse.i_noise_reduction = avctx->noise_reduction;
445 if (avctx->me_subpel_quality >= 0)
446 x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality;
447 if (avctx->b_frame_strategy >= 0)
448 x4->params.i_bframe_adaptive = avctx->b_frame_strategy;
449 if (avctx->keyint_min >= 0)
450 x4->params.i_keyint_min = avctx->keyint_min;
451 if (avctx->coder_type >= 0)
452 x4->params.b_cabac = avctx->coder_type == FF_CODER_TYPE_AC;
453 if (avctx->me_cmp >= 0)
454 x4->params.analyse.b_chroma_me = avctx->me_cmp & FF_CMP_CHROMA;
456 if (x4->aq_mode >= 0)
457 x4->params.rc.i_aq_mode = x4->aq_mode;
458 if (x4->aq_strength >= 0)
459 x4->params.rc.f_aq_strength = x4->aq_strength;
460 PARSE_X264_OPT("psy-rd", psy_rd);
461 PARSE_X264_OPT("deblock", deblock);
462 PARSE_X264_OPT("partitions", partitions);
463 PARSE_X264_OPT("stats", stats);
465 x4->params.analyse.b_psy = x4->psy;
466 if (x4->rc_lookahead >= 0)
467 x4->params.rc.i_lookahead = x4->rc_lookahead;
468 if (x4->weightp >= 0)
469 x4->params.analyse.i_weighted_pred = x4->weightp;
470 if (x4->weightb >= 0)
471 x4->params.analyse.b_weighted_bipred = x4->weightb;
472 if (x4->cplxblur >= 0)
473 x4->params.rc.f_complexity_blur = x4->cplxblur;
476 x4->params.analyse.b_ssim = x4->ssim;
477 if (x4->intra_refresh >= 0)
478 x4->params.b_intra_refresh = x4->intra_refresh;
479 if (x4->bluray_compat >= 0) {
480 x4->params.b_bluray_compat = x4->bluray_compat;
481 x4->params.b_vfr_input = 0;
483 if (x4->b_bias != INT_MIN)
484 x4->params.i_bframe_bias = x4->b_bias;
485 if (x4->b_pyramid >= 0)
486 x4->params.i_bframe_pyramid = x4->b_pyramid;
487 if (x4->mixed_refs >= 0)
488 x4->params.analyse.b_mixed_references = x4->mixed_refs;
490 x4->params.analyse.b_transform_8x8 = x4->dct8x8;
491 if (x4->fast_pskip >= 0)
492 x4->params.analyse.b_fast_pskip = x4->fast_pskip;
494 x4->params.b_aud = x4->aud;
496 x4->params.rc.b_mb_tree = x4->mbtree;
497 if (x4->direct_pred >= 0)
498 x4->params.analyse.i_direct_mv_pred = x4->direct_pred;
500 if (x4->slice_max_size >= 0)
501 x4->params.i_slice_max_size = x4->slice_max_size;
504 * Allow x264 to be instructed through AVCodecContext about the maximum
505 * size of the RTP payload. For example, this enables the production of
506 * payload suitable for the H.264 RTP packetization-mode 0 i.e. single
507 * NAL unit per RTP packet.
509 if (avctx->rtp_payload_size)
510 x4->params.i_slice_max_size = avctx->rtp_payload_size;
513 if (x4->fastfirstpass)
514 x264_param_apply_fastfirstpass(&x4->params);
516 /* Allow specifying the x264 profile through AVCodecContext. */
518 switch (avctx->profile) {
519 case FF_PROFILE_H264_BASELINE:
520 x4->profile = av_strdup("baseline");
522 case FF_PROFILE_H264_HIGH:
523 x4->profile = av_strdup("high");
525 case FF_PROFILE_H264_HIGH_10:
526 x4->profile = av_strdup("high10");
528 case FF_PROFILE_H264_HIGH_422:
529 x4->profile = av_strdup("high422");
531 case FF_PROFILE_H264_HIGH_444:
532 x4->profile = av_strdup("high444");
534 case FF_PROFILE_H264_MAIN:
535 x4->profile = av_strdup("main");
541 if (x4->nal_hrd >= 0)
542 x4->params.i_nal_hrd = x4->nal_hrd;
545 if (x264_param_apply_profile(&x4->params, x4->profile) < 0) {
547 av_log(avctx, AV_LOG_ERROR, "Error setting profile %s.\n", x4->profile);
548 av_log(avctx, AV_LOG_INFO, "Possible profiles:");
549 for (i = 0; x264_profile_names[i]; i++)
550 av_log(avctx, AV_LOG_INFO, " %s", x264_profile_names[i]);
551 av_log(avctx, AV_LOG_INFO, "\n");
552 return AVERROR(EINVAL);
555 x4->params.i_width = avctx->width;
556 x4->params.i_height = avctx->height;
557 av_reduce(&sw, &sh, avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den, 4096);
558 x4->params.vui.i_sar_width = sw;
559 x4->params.vui.i_sar_height = sh;
560 x4->params.i_timebase_den = avctx->time_base.den;
561 x4->params.i_timebase_num = avctx->time_base.num;
562 x4->params.i_fps_num = avctx->time_base.den;
563 x4->params.i_fps_den = avctx->time_base.num * avctx->ticks_per_frame;
565 x4->params.analyse.b_psnr = avctx->flags & CODEC_FLAG_PSNR;
567 x4->params.i_threads = avctx->thread_count;
568 if (avctx->thread_type)
569 x4->params.b_sliced_threads = avctx->thread_type == FF_THREAD_SLICE;
571 x4->params.b_interlaced = avctx->flags & CODEC_FLAG_INTERLACED_DCT;
573 x4->params.b_open_gop = !(avctx->flags & CODEC_FLAG_CLOSED_GOP);
575 x4->params.i_slice_count = avctx->slices;
577 x4->params.vui.b_fullrange = avctx->pix_fmt == AV_PIX_FMT_YUVJ420P ||
578 avctx->pix_fmt == AV_PIX_FMT_YUVJ422P ||
579 avctx->pix_fmt == AV_PIX_FMT_YUVJ444P ||
580 avctx->color_range == AVCOL_RANGE_JPEG;
582 if (avctx->colorspace != AVCOL_SPC_UNSPECIFIED)
583 x4->params.vui.i_colmatrix = avctx->colorspace;
584 if (avctx->color_primaries != AVCOL_PRI_UNSPECIFIED)
585 x4->params.vui.i_colorprim = avctx->color_primaries;
586 if (avctx->color_trc != AVCOL_TRC_UNSPECIFIED)
587 x4->params.vui.i_transfer = avctx->color_trc;
589 if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER)
590 x4->params.b_repeat_headers = 0;
592 if (x4->x264_params) {
593 AVDictionary *dict = NULL;
594 AVDictionaryEntry *en = NULL;
596 if (!av_dict_parse_string(&dict, x4->x264_params, "=", ":", 0)) {
597 while ((en = av_dict_get(dict, "", en, AV_DICT_IGNORE_SUFFIX))) {
598 if (x264_param_parse(&x4->params, en->key, en->value) < 0)
599 av_log(avctx, AV_LOG_WARNING,
600 "Error parsing option '%s = %s'.\n",
608 // update AVCodecContext with x264 parameters
609 avctx->has_b_frames = x4->params.i_bframe ?
610 x4->params.i_bframe_pyramid ? 2 : 1 : 0;
611 if (avctx->max_b_frames < 0)
612 avctx->max_b_frames = 0;
614 avctx->bit_rate = x4->params.rc.i_bitrate*1000;
616 x4->enc = x264_encoder_open(&x4->params);
620 avctx->coded_frame = av_frame_alloc();
621 if (!avctx->coded_frame)
622 return AVERROR(ENOMEM);
624 if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) {
629 s = x264_encoder_headers(x4->enc, &nal, &nnal);
630 avctx->extradata = p = av_malloc(s);
632 for (i = 0; i < nnal; i++) {
633 /* Don't put the SEI in extradata. */
634 if (nal[i].i_type == NAL_SEI) {
635 av_log(avctx, AV_LOG_INFO, "%s\n", nal[i].p_payload+25);
636 x4->sei_size = nal[i].i_payload;
637 x4->sei = av_malloc(x4->sei_size);
638 memcpy(x4->sei, nal[i].p_payload, nal[i].i_payload);
641 memcpy(p, nal[i].p_payload, nal[i].i_payload);
642 p += nal[i].i_payload;
644 avctx->extradata_size = p - avctx->extradata;
650 static const enum AVPixelFormat pix_fmts_8bit[] = {
661 static const enum AVPixelFormat pix_fmts_9bit[] = {
666 static const enum AVPixelFormat pix_fmts_10bit[] = {
667 AV_PIX_FMT_YUV420P10,
668 AV_PIX_FMT_YUV422P10,
669 AV_PIX_FMT_YUV444P10,
673 static const enum AVPixelFormat pix_fmts_8bit_rgb[] = {
681 static av_cold void X264_init_static(AVCodec *codec)
683 if (x264_bit_depth == 8)
684 codec->pix_fmts = pix_fmts_8bit;
685 else if (x264_bit_depth == 9)
686 codec->pix_fmts = pix_fmts_9bit;
687 else if (x264_bit_depth == 10)
688 codec->pix_fmts = pix_fmts_10bit;
691 #define OFFSET(x) offsetof(X264Context, x)
692 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
693 static const AVOption options[] = {
694 { "preset", "Set the encoding preset (cf. x264 --fullhelp)", OFFSET(preset), AV_OPT_TYPE_STRING, { .str = "medium" }, 0, 0, VE},
695 { "tune", "Tune the encoding params (cf. x264 --fullhelp)", OFFSET(tune), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
696 { "profile", "Set profile restrictions (cf. x264 --fullhelp) ", OFFSET(profile), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
697 { "fastfirstpass", "Use fast settings when encoding first pass", OFFSET(fastfirstpass), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, VE},
698 {"level", "Specify level (as defined by Annex A)", OFFSET(level), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
699 {"passlogfile", "Filename for 2 pass stats", OFFSET(stats), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
700 {"wpredp", "Weighted prediction for P-frames", OFFSET(wpredp), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
701 {"x264opts", "x264 options", OFFSET(x264opts), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
702 { "crf", "Select the quality for constant quality mode", OFFSET(crf), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE },
703 { "crf_max", "In CRF mode, prevents VBV from lowering quality beyond this point.",OFFSET(crf_max), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE },
704 { "qp", "Constant quantization parameter rate control method",OFFSET(cqp), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE },
705 { "aq-mode", "AQ method", OFFSET(aq_mode), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "aq_mode"},
706 { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_NONE}, INT_MIN, INT_MAX, VE, "aq_mode" },
707 { "variance", "Variance AQ (complexity mask)", 0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_VARIANCE}, INT_MIN, INT_MAX, VE, "aq_mode" },
708 { "autovariance", "Auto-variance AQ (experimental)", 0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_AUTOVARIANCE}, INT_MIN, INT_MAX, VE, "aq_mode" },
709 { "aq-strength", "AQ strength. Reduces blocking and blurring in flat and textured areas.", OFFSET(aq_strength), AV_OPT_TYPE_FLOAT, {.dbl = -1}, -1, FLT_MAX, VE},
710 { "psy", "Use psychovisual optimizations.", OFFSET(psy), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
711 { "psy-rd", "Strength of psychovisual optimization, in <psy-rd>:<psy-trellis> format.", OFFSET(psy_rd), AV_OPT_TYPE_STRING, {0 }, 0, 0, VE},
712 { "rc-lookahead", "Number of frames to look ahead for frametype and ratecontrol", OFFSET(rc_lookahead), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE },
713 { "weightb", "Weighted prediction for B-frames.", OFFSET(weightb), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
714 { "weightp", "Weighted prediction analysis method.", OFFSET(weightp), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "weightp" },
715 { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_WEIGHTP_NONE}, INT_MIN, INT_MAX, VE, "weightp" },
716 { "simple", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_WEIGHTP_SIMPLE}, INT_MIN, INT_MAX, VE, "weightp" },
717 { "smart", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_WEIGHTP_SMART}, INT_MIN, INT_MAX, VE, "weightp" },
718 { "ssim", "Calculate and print SSIM stats.", OFFSET(ssim), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
719 { "intra-refresh", "Use Periodic Intra Refresh instead of IDR frames.",OFFSET(intra_refresh),AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
720 { "bluray-compat", "Bluray compatibility workarounds.", OFFSET(bluray_compat) ,AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
721 { "b-bias", "Influences how often B-frames are used", OFFSET(b_bias), AV_OPT_TYPE_INT, { .i64 = INT_MIN}, INT_MIN, INT_MAX, VE },
722 { "b-pyramid", "Keep some B-frames as references.", OFFSET(b_pyramid), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "b_pyramid" },
723 { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_B_PYRAMID_NONE}, INT_MIN, INT_MAX, VE, "b_pyramid" },
724 { "strict", "Strictly hierarchical pyramid", 0, AV_OPT_TYPE_CONST, {.i64 = X264_B_PYRAMID_STRICT}, INT_MIN, INT_MAX, VE, "b_pyramid" },
725 { "normal", "Non-strict (not Blu-ray compatible)", 0, AV_OPT_TYPE_CONST, {.i64 = X264_B_PYRAMID_NORMAL}, INT_MIN, INT_MAX, VE, "b_pyramid" },
726 { "mixed-refs", "One reference per partition, as opposed to one reference per macroblock", OFFSET(mixed_refs), AV_OPT_TYPE_INT, { .i64 = -1}, -1, 1, VE },
727 { "8x8dct", "High profile 8x8 transform.", OFFSET(dct8x8), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE},
728 { "fast-pskip", NULL, OFFSET(fast_pskip), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE},
729 { "aud", "Use access unit delimiters.", OFFSET(aud), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE},
730 { "mbtree", "Use macroblock tree ratecontrol.", OFFSET(mbtree), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE},
731 { "deblock", "Loop filter parameters, in <alpha:beta> form.", OFFSET(deblock), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
732 { "cplxblur", "Reduce fluctuations in QP (before curve compression)", OFFSET(cplxblur), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE},
733 { "partitions", "A comma-separated list of partitions to consider. "
734 "Possible values: p8x8, p4x4, b8x8, i8x8, i4x4, none, all", OFFSET(partitions), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
735 { "direct-pred", "Direct MV prediction mode", OFFSET(direct_pred), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "direct-pred" },
736 { "none", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_NONE }, 0, 0, VE, "direct-pred" },
737 { "spatial", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_SPATIAL }, 0, 0, VE, "direct-pred" },
738 { "temporal", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_TEMPORAL }, 0, 0, VE, "direct-pred" },
739 { "auto", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_AUTO }, 0, 0, VE, "direct-pred" },
740 { "slice-max-size","Limit the size of each slice in bytes", OFFSET(slice_max_size),AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE },
741 { "stats", "Filename for 2 pass stats", OFFSET(stats), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE },
742 { "nal-hrd", "Signal HRD information (requires vbv-bufsize; "
743 "cbr not allowed in .mp4)", OFFSET(nal_hrd), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "nal-hrd" },
744 { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_NAL_HRD_NONE}, INT_MIN, INT_MAX, VE, "nal-hrd" },
745 { "vbr", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_NAL_HRD_VBR}, INT_MIN, INT_MAX, VE, "nal-hrd" },
746 { "cbr", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_NAL_HRD_CBR}, INT_MIN, INT_MAX, VE, "nal-hrd" },
747 { "x264-params", "Override the x264 configuration using a :-separated list of key=value parameters", OFFSET(x264_params), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE },
751 static const AVClass x264_class = {
752 .class_name = "libx264",
753 .item_name = av_default_item_name,
755 .version = LIBAVUTIL_VERSION_INT,
758 static const AVClass rgbclass = {
759 .class_name = "libx264rgb",
760 .item_name = av_default_item_name,
762 .version = LIBAVUTIL_VERSION_INT,
765 static const AVCodecDefault x264_defaults[] = {
770 { "i_qfactor", "-1" },
776 // { "rc_lookahead", "-1" },
778 { "sc_threshold", "-1" },
781 { "me_range", "-1" },
782 { "me_method", "-1" },
784 { "b_strategy", "-1" },
785 { "keyint_min", "-1" },
788 { "threads", AV_STRINGIFY(X264_THREADS_AUTO) },
789 { "thread_type", "0" },
790 { "flags", "+cgop" },
791 { "rc_init_occupancy","-1" },
795 AVCodec ff_libx264_encoder = {
797 .long_name = NULL_IF_CONFIG_SMALL("libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
798 .type = AVMEDIA_TYPE_VIDEO,
799 .id = AV_CODEC_ID_H264,
800 .priv_data_size = sizeof(X264Context),
802 .encode2 = X264_frame,
804 .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS,
805 .priv_class = &x264_class,
806 .defaults = x264_defaults,
807 .init_static_data = X264_init_static,
810 AVCodec ff_libx264rgb_encoder = {
811 .name = "libx264rgb",
812 .long_name = NULL_IF_CONFIG_SMALL("libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 RGB"),
813 .type = AVMEDIA_TYPE_VIDEO,
814 .id = AV_CODEC_ID_H264,
815 .priv_data_size = sizeof(X264Context),
817 .encode2 = X264_frame,
819 .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS,
820 .priv_class = &rgbclass,
821 .defaults = x264_defaults,
822 .pix_fmts = pix_fmts_8bit_rgb,